Acid & Alkali Resistant Fireproof Explosion Proof Chemical Lab
Duct Fume Hood Heat Resistant
1. Product Description
A fume hood (sometimes called a fume cupboard or fume closet) is a
type of local ventilation device that is designed to limit exposure
to hazardous or toxic fumes, vapors or dusts.
A fume hood is typically a large piece of equipment enclosing five
sides of a work area, the bottom of which is most commonly located
at a standing work height.
Two main types exist, ducted and recirculating (ductless). The
principle is the same for both types: air is drawn in from the
front (open) side of the cabinet, and either expelled outside the
building or made safe through filtration and fed back into the
room. This is used to:
-protect the user from inhaling toxic gases (fume hoods, biosafety
cabinets, glove boxes)
-protect the product or experiment (biosafety cabinets, glove boxes)
-protect the environment (recirculating fume hoods, certain
biosafety cabinets, and any other type when fitted with appropriate
filters in the exhaust airstream)
Secondary functions of these devices may include explosion
protection, spill containment, and other functions necessary to the
work being done within the device.
2. Product Parameters
|Worktop Size (mm)||1260(W1)*795(D1)*1100(H1)||1560(W1)*795(D1)*1100(H1)|
|Worktop||20+6mm Ceramic||20+6mm Ceramic||12.7mm Solid Physiochemical Board||20+6mm Ceramic||20+6mm Ceramic||12.7mm Solid Physiochemical Board|
|Liner||5mm Ceramic Fibre||5mm Compact Laminate||5mm Compact Laminate||5mm Ceramic Fibre||5mm Compact Laminate||5mm Compact Laminate|
|Diversion Structure||Back Absorption|
|Control System||Touch-Tone Control Panel (LED Screen)|
|Fan Power||Less than 2.8 A|
|Socket Max. Load||5KW|
|Drainage Mode||Natural Fall|
|Storage||Double-Lock, Corrosion-Resistant, Damp-proof, Multi-layer Solid
Wood with Mobile Wheel|
|Application||Indoor No-blast, 0-40 ℃|
|Application Field||Organic Chemical Experiment|
|Face Velocity Control||Manual Control|
|Average Face Velocity||0.3-0.5 m/s Exhaust: 720-1200m³/h||0.3-0.5 m/s Exhaust:900- 1490m³/h|
|Face Velocity Deviation||Less than 10%|
|Average Illumination||Less than 500 Lux|
|Noise||Within 55 dB|
|Exhaust Air||No Residue|
|Safety Test||In Accord with International Standard|
|Resistance||Less than 70Pa|
|Add Air Function||Distinctive Structure (Need Exclusive Add Air System)|
|Air Flow Control Valve||Dia. 250mm Flange Type Anti-Corrosion Control Valve||Dia. 315mm Flange Type Anti-Corrosion Control Valve|
3. More About the Fume Hood
Choosing The Right Liner Material For A Fume Hood
A major consideration for fume hoods is the material of
construction, specifically the liner material. There are many liner
types that are used for various applications and the liner must be
compatible with the chemicals being used. Selecting the right liner
will make all the difference and play a major role in the longevity
of your fume hood.
Epoxy Coated Steel
These liners are typically used in non-corrosive environments. If
acids were to spill on this material, action must be taken as
corrosion will occur. This liner is very economical and is
When considering a steel option, fume hood liners typically come in
Type 304 or Type 316 Stainless Steel. These types of liners are
designed to provide greater life expectancy in harsh environments.
The difference between the two is their makeup. Type 304 stainless
steel contains 18% chromium and 8% nickel while Type 316 contains
16% chromium, 10% nickel, and 2% molybdenum. The molybdenum is
added to help resist corrosion to chlorides.
Type 304 is the most versatile and widely used of the austenitic
stainless steels. It is resistant to oxidation, corrosion, and
durable. This material is very easy to clean and can come in a
variety of finishes and appearances.
Type 316 contains 2% molybdenum giving it greater resistance to
chemical corrosion than its Type 304 counterpart. It is durable,
easy to fabricate, and clean. Being more resistant to sulfuric
acid, chlorides, bromides, iodides, and fatty acids, this steel
will also cost a bit more.
4. Detailed Photos
5. Fume Hood Maintenance
• Hoods should be evaluated by the user before each use to ensure
adequate face velocities and the absence of excessive turbulence.
• In case of exhaust system failure while using a hood, shut off
all services and accessories and lower the sash completely. Leave
the area immediately.
• Fume hoods should be certified, at least annually, to ensure they
are operating safely. Typical tests include face velocity
measurements, smoke tests and tracer gas containment. Tracer gas
containment tests are especially crucial, as studies have shown
that face velocity is not a good predictor of fume hood leakage.
• Laboratory fume hoods are one of the most important used and
abused hazard control devices. We should understand that the
combined use of safety glasses, protective gloves, laboratory
smocks, good safety practices, and laboratory fume hoods are very important elements in protecting us from a potentially hazardous
• Laboratory fume hoods only protect users when they are used
properly and are working correctly. A fume hood is designed to
protect the user and room occupants from exposure to vapors,
aerosols, toxic materials, odorous, and other harmful substances. A
secondary purpose is to serve as a protective shield when working
with potentially explosive or highly reactive materials. This is
accomplished by lowering the hood sash.
6. Project Cases